RC33 Conference 2016 – 9th International Conference on Social Science Methodology was held in 11.-16. September 2016 in Leicester, UK. One of the emerging issues was the impact of new research skills and the big data revolution on teaching and research in social sciences. Olle in collaboration with an Estonian sociologist Dr. Anu Masso from ETH Zurich presented their ongoing research on evaluating big data approach (mobile phone data-based methodology) against conventional questionnaire survey method for investigating individual human mobility in space-time. Case study is about language group differences in individual activity space in Estonia.